On the k-regularity of some proyective manifolds.

Alberto Alzati; Gian Mario Besana

Displaying similar documents to “On the k-regularity of some proyective manifolds.”

Ample vector bundles with zero loci having a bielliptic curve section.

Antonio Lanteri, Hidetoshi Maeda (2003)

Collectanea Mathematica

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Seshadri positive curves in a smooth projective $3$ -fold

Roberto Paoletti (1995)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

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A notion of positivity, called Seshadri ampleness, is introduced for a smooth curve $C$ in a polarized smooth projective $3$ -fold $(X, A)$ , whose motivation stems from some recent results concerning the gonality of space curves and the behaviour of stable bundles on $P^{3}$ under restriction to $C$ . This condition is stronger than the normality of the normal bundle and more general than $C$ being defined by a regular section of an ample rank- $2$ vector bundle. We then explore some of the properties of Seshadri-ample...

On the class of some projective varieties.

Edoardo Ballico, Marina Bertolini, Cristina Turrini (1997)

Collectanea Mathematica

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Some inequalities between the class and the degree of a smooth complex projective manifold are given. Application to the case of low sectional genus are supplied.

On threefolds admitting a bielliptic curve as abstract complete intersection.

Del Centina, A., Gimigliano, A. (2001)

Advances in Geometry

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On the boundedness of the set of ample vector bundles with fixed sectional genus

E. Ballico (1993)

Rendiconti del Seminario Matematico della Università di Padova

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Gonality and Clifford index for real algebraic curves.

Edoardo Ballico (2002)

Collectanea Mathematica

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Let X be a smooth connected projective curve of genus g defined over R. Here we give bounds for the real gonality of X in terms of the complex gonality of X.

On the dimension of the adjoint linear system for threefolds

M. C. Beltrametti, A. J. Sommese (1995)

Annali della Scuola Normale Superiore di Pisa - Classe di Scienze

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Seshadri positive submanifolds of polarized manifolds

Lucian Bădescu, Mauro Beltrametti (2013)

Open Mathematics

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Let Y be a submanifold of dimension y of a polarized complex manifold (X, A) of dimension k ≥ 2, with 1 ≤ y ≤ k−1. We define and study two positivity conditions on Y in (X, A), called Seshadri A-bigness and (a stronger one) Seshadri A-ampleness. In this way we get a natural generalization of the theory initiated by Paoletti in [Paoletti R., Seshadri positive curves in a smooth projective 3-fold, Atti Accad. Naz. Lincei Cl. Sci. Fis. Mat. Natur. Rend. Lincei (9) Mat. Appl., 1996, 6(4),...